moser



A. F. MOSER.

TYPEWRITING MACHINE.

APPLICATION FILED JAN-6, 1919.

Patented Sept. 28, 1920..

4 SHEETS-SHEET I.

WITNESSES NNW A. F. MOSER. TYPE-WRITING MACHINE.

AP LlCAT lOy FILED JAN. 6, 19I9.

Patented Sept. 28, 1920.

4 SHEETS-SHEET Z.

mil"

A TTORNEVS Patenwd Sept 28,1920.

4 SHEETS-SHE 3- III TOR WITNE88E8 A TTORIIEYS A. F MOSER.

TYPEWRITING MACHINE.

APPLICATION FILED mm). mm.

4 SHEETSSHEET 4.

WITNESSES dNVE/VTOR By M 1129-.

AT TORNE Y8 spiral ca'in surface is formed an. opening or gap 9, said opening being formed bycutting i or trackway 8,

away a portion of the wall of the cup. In the spiral cam surface at a point diametrically opposite the'gap 9, is formed a segmental slot 9. At a point substantially opposite the gap 9' is formed an outwardly e,xtending ribbon guide 9, in which is formed a vertical slot adapted to receive the ribbon. The flange 9 of the cup is interrupted at a point adjacent the ribbon guide lug to form a channel through which the ribbon may extend in passing from within the cup to the slot in the guide lug.

Secured to the under side ofthe ribbon spool receiving cup is an automatic shifter switch 8, said switch extending through the gap 9 of the cup over the lowest point .of the spiral cam and into the cup, as shown in Fig. 7. The shifter switch is formed with a substantiallyconcentric horizontal portion which overlies the lowest part of the spiral cam 9 of the cup 9; and at its free end it is formed into a thin flexible tongue 8", which extends downwardly through the segmental slot in the cam surface of the cup, as shown in Fig. 7, so that the upper surface of the shifter switch forms a substantially continuous annular surface at the same height or level as the highest part of the spiral cam. The spiral cam surface forms about one-half of the annular track or guideway, the other half of the said track or guideway being substantially horizontal. Said substantially horizontal portion extends from the segmental slot around to the gap 9 so that the segmental shifter switch tially the entire spiral cam surface. The under side of the end of the shifter switch, adjacent the slot 9, is beveled downwardly to correspond with the downwardly inclined surface of the adjacent part of the annular trackway 9 of the cup. The end of the shifter-switch, adjacent the'gap 9, is also beveled downwardlyf The spool receiving cup is ring-like in general'form to permit it to be placed over the ribbon spool sleeve, and to permit the automatic shifter lever to operate therethrough, as will be fully hereinafter described.

igidly secured to the ribbon spool sleeve is a bottom disk 6, said disk being mounted on the said sleeve above thesquared portion 2. This bottom disk fits within the spool-receiving cup close to but out of contact with the shifter switch, andthe annular flange 9 of the cup, 1,2 and 5. This bottom disk is formed'with :1 depending pivot lug 6 and with an aperture 6", diametrically opposite the said lug.

F Pivotally mounted in the pivot lug 6 is a shifter lever 5, said lever being generally yoke-shaped in plan The. end of this bearing wardly and into overlies substan- .the link 11.

as shown clearly in Figs.-

view, the two arms lever is provided with an upwardly extending ribbon-engaging arm 5", and with a laterally extending bearing arm 5, this latter arm being formed with a bearing lug on its under side, which is adapted to engage and ride on the annular track of the cup and on the segmental portion of the shifter switch. arm is adapted to engage the flexible tongue 8 of the shifter switch to force the sameoutwardi'y, as will be more fully hereinafter described.

The upper disk 13 of the ribbori spool carries a sleeve 7 which is adapted to be forced down over the upper end of .the ribbon spool supporting sleeve; and the sleeve is formed with an inwardly pressed spring lug 7, which is adapted to engage in a slot 7 formed in the upperend of the ribbon spool supporting sleeve to insure the ribbon spool rotating with the sleeve. The end of the ribbon is securedto the spool sleeve 7 by means of a U-shaped clip which springs around and clasps the said sleeve, as indicated in Fig. 2.

ound about the pivot of the shift lever 5 is a spring 16, one end of which bears against the under side of the spool disk 6, the other bearing upon the upper side of the shift lever and tending to throw it downengagement with the upper surface of the ribbon spool gear so that when the contact arm of the shift lever is free of the cam surface of the spool receiving cup the spring 16 will throw the said lever downwardly and carry the engaged gear 3 into mesh with its operating worm.

lounted on a suitable rigid support is an upwardly extending bracket 12, having two forwardly and upwardly extending stop arms 12*. Pivoted on said bracket is a shift lever 10, said lever being loosely connected to the shift link 11.' Connected to the upper end of the shift lever is a spring '15, the other end of said spring being connected to The link is formed with a large opening 11 to receive the end of the. spring 15, said opening being formed in the link above the pivot of the shift lever, as clearly shown in Figs. 15 and 1610f the drawings. The shift lever is formed-with a forwardly extending lug l0 which extends into the opening ll and fits loosely therein. The object of this device is to provide means for manually shifting the link 11 and thereby, through the operation of the bellcrank lovers 4, reverse the dir'ection of moveme'nt of the ribbon by disconnecting one of the ribbon spool gears worm and throwing the other ribbon spool gear into mesh with its operating worm. The lever 10 is moved from one stop arm 12 over to the other stop arm. This extends the from its operating 25 spring 15 and when the lever has passed be- 30 axially relatively thereto,

cam, and a shifter switch carried by said cup adapted to form a substantially horizontal traclnvay for the shifter lever when said lever is engaged by the ribbon.

4. in a typewriting machine, the combination of a pair of ribbon spools, means for rotatably supporting the spools, a pair of gears rotatable with the spools and shiftable relatively thereto, driving means for the gears, and ribbon controlled means for simultaneously shifting said gears in opposite directions to operatively connect first one and then the other of said gears with its driving means.

5. In a typewriting machine. the combination of a pair of ribbon spools, means for rotatably supporting the spools, a pair of gears mounted on the spool supporting means to rotate with the spools and slide means for drivng the gears to feed a ribbon, and means operable automatically upon exhaustion of the. ribbon from either spool for shifting the gear associated with the exhausted spool into operative relation with its driving means and simultaneously shiftin the other gear out of operative relation with its driving means.

6. In .a typewriting machine, the combination of a pair of ribbon-spools, means for rotatably supporting the spools, a, pair of gearsrotatable with the spools and shiftable relatively thereto, driving means for the gears, means connecting said gears to cause the gears to move alternately into operative relation with the driving means, a pair of gear-shifting devices rotatable with the spools normally tending to shift the gears into operative relation with the driving means and each adapted to be held against gear-shifting movement by a ribbon wound on the spools until the ribbon is exhausted from its associated spoohand means associated with each gear-shifting device for restoring the device. associated with the spool from which the ribbon has been unwound upon reversal of the rotary movement of the spools caused by the release of said gear shifting device.

7. In a typewriting machine, the combination of a pair of ribbon spools, means for rotatably supporting the spools, a pair of gears rotatable with the spools and shiftable relatively thereto, driving means for the gears, means connecting said gears to cause the gears to move alternately in operative relation with the driving means, a pair of gear-shifting devices rotatable with the spools normally tending to shift the gears into operative relation with the driving means and each adapted to be held against gear-shifting movement by a ribbon until the ribbon is exhausted from its associated spool, means associated with each gear shift ing device for restoring the device assofor rotating an initial rotation of ciated with the spool from which the ribbon has been last unwound upon reversal of the rotary movement of the spoois caused by the release of said gear shifting device, and automatically shiftable yield" ably held means operatively connected with the gear-connecting means for holding the arm operatively connected to shift one of said driving elements. a link connecting the other arms of the bell crank levers, means the driving elements, and a pair of pivoted spring-pressed devices rotatable with the spools adapted to engage and shift rotatabiy said driving elements into operative reiation with said element. rotating means, each of said devices having an arm adapted to engaged'by a ribbon wound on the spools to hold the device retracted until the ribbon is exhausted from the spool with which the device is associated.

9. Ribbon feed mechanism comprising pair of ribbon spools, means for rotatabiy supporting thespools, a pair of spool drir ing elements rotatable with the spools shiftable axially relatively to the spools, pair of hell crank levers each having one arm operatively connected to shift one of said driving elements, a link connecting the other arms of the bell crank levers, means for rotating the driving elements, a pair of pivoted spring-pressed devices rotatable with the spools adapted to engage and shift said driving elements into operative relation with said element rotating means, each of said devices having an arm adapted to .be engaged by a ribbon wound on the spools to hold the device retracted until. the ribbon device is associated, and means associated with each of said devices for restoring the same against the tension of its spring upon the spool from which the ribbon has. been exhausted in the reverse direction.

10. Ribbon feed machanism comprising a pair of ribbon spools, means for rotatably supporting the spools, a pair of spool driving elements rotatable with the spools and shiftable axially relatively to the spools, a pair of bell crank levers each having one arm operatively connected to shift one of said driving elements, a link connecting the other arms of the bell crank levers, means for rotating the driving elements, a pair of pivoted spring-pressed devices rotatable with the spools adapted to engage and shift said driving elements into operative relation with said element rotating means, each of said L ilevices having an edepbe to be eogaged by e ribbon Wound on the spools to hold the clevice reti'ec'veil until the ribbon is exhaust-ed from the spool with which the cleviee is associated, and on automatically shift-able yieldelil Lselel device coloiieefieel wieli li'i hole-.31" 'zlie spool (lrivi'ng cleviee upon. the ribbon was lost exhausted in the verse direction. 13, Ribbon pair of ribbon spools suppoi'ting the spools, s pair of elements rotatable with the robot-ion of the spool "from which re mechanism comprising a means for rotetobly spool drivspools and 1 a 1 a elements 131 Tfiflllffi-ii positions shi'lteole axially of the spools, means for 11. Ellison teed mememsm comprising a romeo-Ag said elemenes, means connecting of riblion 'spools, supporting the spools mg eienm; X1330" .EL '7 smimble Inez-ms f0? rotateloly poi? as spool dri'w 4 l tively into the element rotating means, 21,

said clriviiw elements for v means slid ices having an arm ezlupted engaged by a ribbon Wound on "-ly theieto "o cli'iving with their rotating rose is, each of l to be the spools axial movement simultaneously in. opposiie directions respeconcl out of driving relation Wi 1 pair of o'leci spying-pressed cleviees rotatable xvi i .20 vices rot-s WA; the spools oils 0 Ito hold the device retracted until she ribloan is exhsustel from the spooi with the cleviee cisterl wish each clevice upon rotation of the spool tl ribbon lest iliieciion, the (h lions.

engage mil shift said driving elements in operative eels/Lion with seicl element oto'a i ing means, e: oi seiol ileviees l1 arm adapts-cl to be engaged by Wound on the spools to hold the (le trecieo'. until the ribbon the sgool with ice 1 is exhausted "from. e (l u is :issoci with eatloi saial in their W Hill eieeL means associated *mg; elements which associated, s fixed cam essodevice for restoring ire-m which exhausted in the reverse encl yieliloble mea s for holding shifted posi- I devices or ves zoi-ing .oe some 11;; inst the 1 mechanism comprising a, 5 tension of its spring; ugion an finial i'o'topair of o ls, means for rotouebly tioii' of the spool item which the ribbon supporting 5h pair of spool drivin elements has been exhausted in the reverse cliireo- "1th the spools Hui tion, enel an mitome icallv slii'fieble yielclslimeble axially relatively to she spools on ably held device connected "with seiel sail spool supporting means, a pair of bell for holding the spool driving elements in their Sillii'ifid 'pOSllAOIlS,

to shift one m elements. a

linli connecting" the 1 v pair of ilblJOIl spools means IO? rotstebl e 1 one hell crank iev means ior suppers-ins tlie spools, a pa 1 lI1V fi e eie'l' 2 92,1? 0

i of spool 111;: elements i'o zitelile with Elie spools one, 1 s hi'ftelile axialiy of the spools means 1 no: said. elements, iiiea J said driving elements i or iii mow-omen; simultaneously in opposite directions i'especage ma or v; on one lively into and on; oi driving: rel: iii. with by e ribs-on Wound on 'blli, spools the element rotating; meal s, a pair of the device until the rib o'ceel springopresseil devices rote-table with, teal from the spool with which the spools mini sliiftelile relatively the' eio essooiateel, e fixed com to move saiil driving; elements iniio iliiviiie ossoeiotecl W- .7 said spring-pressed relation with their rotating means, (ieviees for L tie s le upon rotasoiel devises having; an arm adapted to be sion of the s wociw ieiewlth in the engaged by a ribbon WQGDii e spools veveise cliyecsion after release of said elevice; n

liiis specification. llovemloey, A. L. 1

to fool the device i'euiec'se-il 11:1,

eon is exhausted fieo o the spoo iilie devis is "ed. and

crook lfiVQlS each having one arm operaof said drivother ldli'llllvfi relation eZLIIS, each o oted to be signed this 20 day of Q. 

